These three languages are spoken in Ireland, Man and Scotland.
The Gaels are the peoples who speak these languages or
did so in the past. Gaelic was in danger of being exterminated in
many of the traditional gaelic speaking areas, but now a
gaelic renaissance has slowed this trend if not yet reversed it.

Here is an html document originally written by by
Caoimhin P. ” Donnaile, which gives a basic comparison
of irish and scottish Gaelic. Hopefully, soon somebody with
a good understanding of Manx will add Manx to this comparison.
Click here to
see this informative
piece of work.

Here is another useful comparison document that shows
the similarities and differences between the Gaelic Languages.
Click here to read the Lord's
Prayer in gaelic(s).